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Banksia formosa

Showy Dryandra

Family ProteaceaeGenus Banksia

A woody cone-like fruit head studded with dark follicles, at the center of a rosette of long saw-toothed leaves
FruitHesperianCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
shrubPlants of the World Online
Flower
Golden orangeWikipedia
Native range
Western AustraliaGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • Showy dryandra, from the south-west of Western Australia, can carry more than two hundred golden-orange flowers in a head. One assessment found its range is likely to shrink by 50 to 80 per cent by 2080 as the climate changes. Wikipedia: Banksia formosa

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 56 days.

80% germination in 56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dryandra p. 136Public domain
Show the original text
Dryandra (Proteaceae). D. formosa germ. 70D(40% in 4-8 w), 70D with GA-3(31% in 3rd w) and 40(80% in 8th w). Starting at 40 is best. The GA-3 seedlings were normal.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dryandra p. 136. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 56 days to germinate.

40% germination in 28–56 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Dryandra p. 136Public domain
Show the original text
Dryandra (Proteaceae). D. formosa germ. 70D(40% in 4-8 w), 70D with GA-3(31% in 3rd w) and 40(80% in 8th w). Starting at 40 is best. The GA-3 seedlings were normal.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Dryandra p. 136. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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